Ubuntu16.04安装pcl出现cannot find -lvtkproj4解决办法

两个方法，分别转载自https://blog.csdn.net/danmeng8068/article/details/77341532
和 https://haoyu.love/blog371.html

#第一个方法

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Ubuntu16.04安装pcl，方法是直接执行

sudo apt-get install libpcl-dev pcl-tools

运行测试程序时出现以下错误

make[2]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libproj.so', needed by 'joinMap'.  Stop.

CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/joinMap.dir/all' failed
make[1]: *** [CMakeFiles/joinMap.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

*** Failure: Exit code 2 ***

解决方法，执行

sudo apt-get install libproj-dev

再次编译出现以下错误

-- Build files have been written to: /home/wd/code/slambook-master/ch5/joinMap/build
[ 50%] Linking CXX executable joinMap
/usr/bin/ld: cannot find -lvtkproj4
collect2: error: ld returned 1 exit status
CMakeFiles/joinMap.dir/build.make:349: recipe for target 'joinMap' failed
make[2]: *** [joinMap] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/joinMap.dir/all' failed
make[1]: *** [CMakeFiles/joinMap.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
*** Failure: Exit code 2 ***

解决方法，需要在cmakelist中加一条指令修复，即在add_executable语句前面加上list(REMOVE_ITEM PCL_LIBRARIES "vtkproj4")

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####肥肠可惜，这个方法不适用于我
于是找到了第二篇blog（见上方）
终于解决。
总结：不贴Cmakelists不贴代码，通解也不一定适合你！